"Non-lexical vocables in music" . "scat vocals" . "whoa-oh-oh" . "nonlexical" . "non-lexical vocable" . "nonsense syllables" . "non-lexical harmonies" . . "Non-lexical vocables in music" . "a series of nonsense syllables" . "vocables" . "non-lexical vocals" . . "non-lexical vocable in music" . "lyrics" . "wordless" . "non-lexical vocables" . "self-created sounds" . . "doo-doo-doo-da-doo" . "wordless vocal lines" . "la la la" . "vocable" . "La" . "lalala" . "vocalise" . . "wordless vocals" . "used in music" . "non-lexical" . . "vocalization without words" . "hup fol-de-rol la la la la" . "vocable singing" . "nonverbal vocals" . "non-lexical vocables used in music" .